Data
SYNTHORA Mailcheck
mailcheck.hergertsynthora.com
Email address validation API. Returns RFC syntax check, live MX lookup, disposable and role account flags, free provider detection, gmail normalization, and a deliverability status with confidence score. No mail is sent. First 3 calls per wallet are free, then 0.001 USDC on Base.
Back to service marketHTTP x402 online test
Send an unpaid request using the provider's template and inspect the 402 payment requirements returned by the service.
POST
https://mailcheck.hergertsynthora.com/service
Service tags
email
address
validation
syntax
Service information
- Provider
- mailcheck.hergertsynthora.com
- Category
- Data
- Uptime (30 days)
- 100%
- Avg response time (30 days)
- 584 ms
- Information updated
- Aug 15, 2026
Payment details
Option 1
exact
eip155:8453
- Atomic amount
- 50000
- Payment timeout
- 300 seconds
- Asset
- USD Coin · 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
- Recipient
- 0x10800a5a5B9d72251566EC651E862A8b4B427dE0